Top 100 Call Center Services in California
The Best of December 2025Looking for a top voice service and call center company in California?
Voice services companies provide value to your company: automating your client communication allows your company the flexibility to devote resources to core firm-building activities.
To assist you in your search for a partner, we’ve compiled this list of the top voice and call center services in California. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best California Voice Services Providers
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$5,000+50 - 249 employeesBoca Raton, FLRead More
SalesRoads is a Sales Outsourcing company. Their midsize team is based in Boca Raton, Florida; Haddonfield, New Jersey and Philadelphia, Pennsylvania. The agency focuses on Sales Outsourcing, Email Marketing, and Call Center Services. The agency was founded in 2007.
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$1,000+1,000 - 9,999 employeesChicago, ILEstablished in 2017, Hugo Inc. Is a Customer Service Outsourcing company. The agency specializes in Customer Service Outsourcing, Call Center Services, Back Office Outsourcing, Content Moderation Services, and more and has a large team. The agency is in Chicago, Illinois and Lagos, Nigeria.Read More
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$1,000+250 - 999 employeesOrlando, FLRead More
Answering service company XACT was founded in 1998. Their midsize team is in Orlando, Florida and Unity, Maine. XACT focuses on Call Center Services, Customer Service Outsourcing, Sales Outsourcing, Back Office Outsourcing, and more.
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31Undisclosed10 - 49 employeesIrvine, CARead More
Helpt is a Irvine, California-based customer service outsourcing company. The small firm was launched in 2022. Their team offers customer service outsourcing, call center services, and IT staff augmentation.
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32Undisclosed10 - 49 employeesOakland, CARead More
Numa is an answering service based in Oakland, Calif., and founded in 2016. Their team of fewer than 50 specializes in voice services for clients ranging from small firms to large corporations in the fields of real estate, hospitality, and retail.
Clients
Emblush BeauteIndustries
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33Undisclosed50 - 249 employeesSanta Clarita, CARead More
NETbilling is a non-voice bpo/back office services company. Their small team is located in Santa Clarita, California. Their services include non-voice bpo/back office services. The firm was launched in 1998.
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34$1,000+50 - 249 employeesDiamond Bar, CAEstablished in 2004, BillingParadise is a Back Office Outsourcing company. The midsize Diamond Bar, California-based team provides Back Office Outsourcing and Call Center Services.Read More
Clients
NextGen HealthcareIndustries
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35$1,000+2 - 9 employeesLaguna Beach, CARead More
Established in 2022, Salesautomators is a CRM consulting and SI company. They are headquartered in Laguna Beach, California and have a small team. The company offers CRM consulting and SI, IT strategy consulting, other IT consulting and SI, business consulting, and more.
Industries
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36$1,000+10 - 49 employeesEl Cajon, CARead More
Answer California is a voice support outsourcing firm based in El Cajon, Calif., just outside of San Diego. Founded in 1998, Answer California has just under 13 employees. They exclusively provide voice service outsourcing. Their specific call center services include automatic answering, order processing, and customer service.
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37Undisclosed10 - 49 employeesLos Angeles, CALaunched in 1989, Answering365 is a phone answering service. In Los Angeles, California, the team specializes in Call Center Services and Customer Service Outsourcing.Read More
Clients
Cedars Sinai HospitalIndustries
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38$1,000+50 - 249 employeesLos Angeles, CAZventus is an answering service. The midsize Los Angeles, California-based team specializes in Call Center Services and Sales Outsourcing. The firm was established in 2016.Read More
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39$1,000+10 - 49 employeesCeres, CARead More
Founded in 2011, WC Call Center is a telemarketing agency based in Carlsbad, Calif. With fewer than 50 employees, the agency specializes in voice services and primarily works with clients in the financial services industry.
Clients
Payroll Select ServicesIndustries
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40Undisclosed2 - 9 employeesRedding, CAFounded in 2023, Virtual Legacy Partner is a Staffing company. Their small team is located in Redding, California. Their services include Staffing, Call Center Services, and Generative AI.Read More
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41$1,000+2 - 9 employeesManhattan Beach, CARead More
89Bots.com is a Messenger marketing automation studio founded in Los Angeles with no more than 10 professionals. They offer conversion optimization, web development, and AI solutions to small and medium-sized companies alike.
Clients
edTechBaseIndustries
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42$50,000+50 - 249 employeesSan Jose, CASuccessLink Outsourcing, an answering service company, is based in San Jose, California. The company specializes in call center services, back office outsourcing, customer service outsourcing, finance & accounting outsourcing (FAO), and more and has a midsize team.The company was launched in 2024.Read More
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43$1,000+10 - 49 employeesGlendale, CASocial media marketing company WebStax Studio is in Glendale, California. They offer Social Media Marketing, Search Engine Optimization, Pay Per Click, Web Design, and more and were launched in 2011.Read More
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44$1,000+10 - 49 employeesNewport Beach, CAAlliance Virtual Offices, a call center service, is located in Newport Beach, California. Launched in 2007, the team focuses on Call Center Services.Read More
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45Undisclosed250 - 999 employeesPleasanton, CAMidsize answering service Packet Fusion, is in Pleasanton, California and Pleasanton, California. Their services include Call Center Services.Read More
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46$1,000+1,000 - 9,999 employeesSan Jose, CACall center company 8x8 was founded in 1987. The team offers Call Center Services.Read More
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47$1,000+2 - 9 employeesWalnut Creek, CAReliable Receptionist is an answering service. The Walnut Creek, California-based team offers Call Center Services.Read More
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48$1,000+250 - 999 employeesLos Angeles, CATelephone answering service One Contact Center offers Call Center Services and Back Office Outsourcing. They are located in Los Angeles, California and Pasig, Philippines.Read More
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49Undisclosed250 - 999 employeesChula Vista, CAConnempathy, a telephone answering service and Customer Service Outsourcing company, was founded in 2010. The firm specializes in Call Center Services and Customer Service Outsourcing, and is midsize.Read More
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50Undisclosed250 - 999 employeesSacramento, CATeleDirect Call Centers, a call center service and Customer Service Outsourcing company, was launched in 1961. The midsize team provides Call Center Services and Customer Service Outsourcing.Read More
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51$1,000+50 - 249 employeesSanta Monica, CACalltastic is a Business Consulting company located in Santa Monica, California. The team specializes in Business Consulting and Call Center Services.Read More
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52$1,000+10 - 49 employeesSan Diego, CAZipQuote is a Sales Outsourcing company. Founded in 2008, the firm is located in San Diego, California. Their team offers Sales Outsourcing.Read More
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53Undisclosed250 - 999 employeesLos Angeles, CAGet B2B Leads is a midsize Los Angeles, California-based Sales Outsourcing company. The team provides Sales Outsourcing and Social Media Marketing.Read More
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54Undisclosed10 - 49 employeesSan Francisco, CACloudVO, a call center company, was founded in 2010. The small team provides Call Center Services.Read More
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55Undisclosed1,000 - 9,999 employeesWalnut, CAOBPO is a call center. The large Iloilo City, Philippines-based team specializes in Call Center Services and Back Office Outsourcing. The firm was founded in 2000.Read More
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56$1,000+50 - 249 employeesSan Francisco, CAEmerge natural sales solutions is a midsize Customer Service Outsourcing company in San Francisco, California. The team provides Customer Service Outsourcing and Sales Outsourcing.Read More
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57Undisclosed10 - 49 employeesIrvine, CAExcel Telemessaging, a small call center service, is in Irvine, California and Venice, Florida. The team focuses on Call Center Services and Customer Service Outsourcing.Read More
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58Undisclosed50 - 249 employeesAnaheim, CACall center company Infomatic Solutions provides Call Center Services and IT managed services. They were founded in 2009.Read More
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59Undisclosed10 - 49 employeesLos Angeles, CABased in Los Angeles, California, Tel-Us Call Center is a small call center. The team specializes in Call Center Services and Customer Service Outsourcing.Read More
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60$1,000+10,000+ employeesGardena, CAEstablished in 1966, transcosmos is a Customer Service Outsourcing company. Their team provides Customer Service Outsourcing and Call Center Services.Read More
Industries
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